: Note that official support for Office 2016 and 2019 ended in late 2025; upgrading to Microsoft 365 is recommended for ongoing security.

Use the Office Deployment Tool (ODT) . This tool allows you to download a specific "source" folder containing Office + your desired language pack onto a network share. You then run ODT in configure mode pointing to that local source. This is the recommended "offline" method for M365 users.

The ribbon flickered. For one heart-stopping second, the screen went white. Then, the familiar grid of cells returned. But this time, "Inicio" replaced "Home." "Insertar" replaced "Insert." "Datos" replaced "Data."